/*
 * Facebox (for jQuery)
 * version: 1.2 (05/05/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *  
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox() 
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 * 
 *    jQuery.facebox('some html')
 *
 *  The above will open a facebox with "some html" as the content.
 *    
 *    jQuery.facebox(function($) { 
 *      $.get('blah.html', function(data) { $.facebox(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The facebox function can also display an ajax page or image:
 *  
 *    jQuery.facebox({ ajax: 'remote.html' })
 *    jQuery.facebox({ image: 'dude.jpg' })
 *
 *  Want to close the facebox?  Trigger the 'close.facebox' document event:
 *
 *    jQuery(document).trigger('close.facebox')
 *
 *  Facebox also has a bunch of other hooks:
 *
 *    loading.facebox
 *    beforeReveal.facebox
 *    reveal.facebox (aliased as 'afterReveal.facebox')
 *    init.facebox
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are revealed... })
 *
 */
(function($) {
  $.facebox = function(data, klass) {
      $.facebox.loading();

      if (data.ajax) fillFaceboxFromAjax(data.ajax);
      else if (data.image) fillFaceboxFromImage(data.image);
      else if (data.div) fillFaceboxFromHref(data.div);
      else if ($.isFunction(data)) data.call($);
      else $.facebox.reveal(data, klass);
  }

  /*
   * Public, $.facebox methods
   */

    $.extend($.facebox, {
        settings: {
            opacity: 0,
            overlay: true,
            loadingImage: '/resources/images/loading.gif',
            closeImage: '/resources/images/closelabel.gif',
            imageTypes: ['png', 'jpg', 'jpeg', 'gif'],
            faceboxHtml: '\
    <div id="facebox" style="display:none;"> \
      <div class="popup"> \
        <table> \
          <tbody> \
            <tr> \
              <td class="tl"/><td class="b"/><td class="tr"/> \
            </tr> \
            <tr> \
              <td class="b"/> \
              <td class="body"> \
                <div class="content"> \
                </div> \
                <div class="footer"> \
                  <a href="#" class="close"> \
                    <img src="/resources/images/closelabel.gif" title="close" class="close_image" /> \
                  </a> \
                </div> \
              </td> \
              <td class="b"/> \
            </tr> \
            <tr> \
              <td class="bl"/><td class="b"/><td class="br"/> \
            </tr> \
          </tbody> \
        </table> \
      </div> \
    </div>'
        },

        loading: function() {
            init();
            if ($('#facebox .loading').length == 1) return true;
            showOverlay();

            $('#facebox .content').empty();
            $('#facebox .body').children().hide().end().
                append('<div class="loading"><img src="' + $.facebox.settings.loadingImage + '"/></div>');

            $('#facebox').css({
                top: getPageScroll()[1] + (getPageHeight() / 10),
                left: 385.5
            }).show();

            $(document).bind('keydown.facebox', function(e) {
                if (e.keyCode == 27) $.facebox.close();
                return true;
            });
            $(document).trigger('loading.facebox');
        },

        reveal: function(data, klass) {
            $(document).trigger('beforeReveal.facebox');
            if (klass) $('#facebox .content').addClass(klass);
            $('#facebox .content').append(data);
            $('#facebox .loading').remove();
            $('#facebox .body').children().fadeIn('normal');
            $('#facebox').css('left', $(window).width() / 2 - ($('#facebox table').width() / 2));
            $(document).trigger('reveal.facebox').trigger('afterReveal.facebox');
        },

        close: function() {
            $(document).trigger('close.facebox');
            return false;
        }
    });

  /*
   * Public, $.fn methods
   */

  $.fn.facebox = function(settings) {
      init(settings);

    function clickHandler() {
        $.facebox.loading(true);

      // support for rel="facebox.inline_popup" syntax, to add a class
      // also supports deprecated "facebox[.inline_popup]" syntax
        var klass = this.rel.match(/facebox\[?\.(\w+)\]?/);
        if (klass) klass = klass[1];

        fillFaceboxFromHref(this.href, klass);
        return false;
    }

      return this.click(clickHandler);
  }

  /*
   * Private methods
   */

  // called one time to setup facebox on this page
  function init(settings) {
      if ($.facebox.settings.inited) return true;
      else $.facebox.settings.inited = true;

      $(document).trigger('init.facebox');
      makeCompatible();

      var imageTypes = $.facebox.settings.imageTypes.join('|');
      $.facebox.settings.imageTypesRegexp = new RegExp('\.' + imageTypes + '$', 'i');

      if (settings) $.extend($.facebox.settings, settings);
      $('body').append($.facebox.settings.faceboxHtml);

      var preload = [new Image(), new Image()];
      preload[0].src = $.facebox.settings.closeImage;
      preload[1].src = $.facebox.settings.loadingImage;

      $('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
          preload.push(new Image())
          preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1');
      });

      $('#facebox .close').click($.facebox.close);
      $('#facebox .close_image').attr('src', $.facebox.settings.closeImage);
  }
  
  // getPageScroll() by quirksmode.com
  function getPageScroll() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {	 // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;	
    }
      return new Array(xScroll, yScroll);
  }

  // Adapted from getPageSize() by quirksmode.com
  function getPageHeight() {
      var windowHeight;
    if (self.innerHeight) {	// all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }
      return windowHeight;
  }

  // Backwards compatibility
  function makeCompatible() {
      var $s = $.facebox.settings;

      $s.loadingImage = $s.loading_image || $s.loadingImage;
      $s.closeImage = $s.close_image || $s.closeImage;
      $s.imageTypes = $s.image_types || $s.imageTypes;
      $s.faceboxHtml = $s.facebox_html || $s.faceboxHtml;
  }

  // Figures out what you want to display and displays it
  // formats are:
  //     div: #id
  //   image: blah.extension
  //    ajax: anything else
  function fillFaceboxFromHref(href, klass) {
    // div
    if (href.match(/#/)) {
        var url = window.location.href.split('#')[0];
        var target = href.replace(url, '');
        $.facebox.reveal($(target).clone().show(), klass);

        // image
    } else if (href.match($.facebox.settings.imageTypesRegexp)) {
        fillFaceboxFromImage(href, klass);
        // ajax
    } else {
        fillFaceboxFromAjax(href, klass);
    }
  }

  function fillFaceboxFromImage(href, klass) {
      var image = new Image();
    image.onload = function() {
        $.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass);
    }
      image.src = href;
  }

  function fillFaceboxFromAjax(href, klass) {
      $.get(href, function(data) { $.facebox.reveal(data, klass) });
  }

  function skipOverlay() {
      return $.facebox.settings.overlay == false || $.facebox.settings.opacity === null;
  }

  function showOverlay() {
      if (skipOverlay()) return;

      if ($('facebox_overlay').length == 0)
          $("body").append('<div id="facebox_overlay" class="facebox_hide"></div>');

      $('#facebox_overlay').hide().addClass("facebox_overlayBG")
          .css('opacity', $.facebox.settings.opacity)
          .click(function() { $(document).trigger('close.facebox'); })
          .fadeIn(200);
      return false;
  }

  function hideOverlay() {
      if (skipOverlay()) return;

      $('#facebox_overlay').fadeOut(200, function() {
          $("#facebox_overlay").removeClass("facebox_overlayBG");
          $("#facebox_overlay").addClass("facebox_hide");
          $("#facebox_overlay").remove();
      });
      return false;
  }

  /*
   * Bindings
   */

    $(document).bind('close.facebox', function() {
        $(document).unbind('keydown.facebox');
        $('#facebox').fadeOut(function() {
            $('#facebox .content').removeClass().addClass('content');
            hideOverlay();
            $('#facebox .loading').remove();
        });
    });

})(jQuery);
